Browsing by Subject "Graphene"

Now showing items 1-20 of 93

  • 3Cat-1 project: a multi-payload CubeSat for scientific experiments and technology demonstrators 

    Jové Casulleras, Roger; Araguz López, Carles; Via Ortega, Pol; Solanellas Bofarull, Arnau; Amézaga Sarries, Adrià; Vidal Mateu, David; Muñoz Martin, Joan Francesc; Marí Barceló, Marc; Olivé Muñiz, Roger; Sáez Hernández, Alberto; Jané Abad, Jaume; Bou Balust, Elisenda; Iannazzo Soteras, Mario Enrique; Gorreta Mariné, Sergio; Ortega Villasclaras, Pablo Rafael; Pons Nin, Joan; Domínguez Pumar, Manuel; Alarcón Cot, Eduardo José; Ramos Castro, Juan José; Camps Carmona, Adriano José (2017)
    Article
    Open Access
    This article introduces 3 Cat-1, the first project of the Technical University of Catalonia to build and launch a nano-satellite. Its main scope is to develop, construct, assemble, test and launch into a low Earth orbit a ...

  • Adhesion and friction control localized folding in supported graphene 

    Zhang, Kuan; Arroyo Balaguer, Marino (American Institute of Physics (AIP), 2013-05)
    Article
    Restricted access - publisher's policy
    Graphene deposited on planar surfaces often exhibits sharp and localized folds delimiting seemingly planar regions, as a result of compressive stresses transmitted by the substrate. Such folds alter the electronic and ...

  • A graphene based plasmonic antenna design for communication in the THz regime 

    Suessmeier, Christoph; Schaeffer, Stephan; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Stock, Daniel; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Restricted access - publisher's policy
    We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.

  • Analysis of a plasmonic graphene antenna for microelectronic applications 

    Suessrneier, C.; Thiel, F.; Wigger, Anna K.; Bolívar, Peter Haring; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Cabcllos Aparicio, A.; Banszcrus, L.; Stampfer, C.; Lemme, M. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Graphene offers a large potential to downscale antennas to the micrometer scale, due to its special dispersion relation and its ability to support plasmons in the THz frequency range. For an adequate performance of the ...

  • An atomistic-based foliation model for multilayer graphene materials and nanotubes 

    Ghosh, Susanta; Arroyo Balaguer, Marino (2013-01)
    Article
    Open Access
    We present a three-dimensional continuum model for layered crystalline materials made out of weakly interacting two-dimensional crystalline sheets. We specialize the model to multilayer graphene materials, including ...

  • Area and laser power scalability analysis in photonic networks-on-chip 

    Abadal Cavallé, Sergi; Cabellos Aparicio, Alberto; Lázaro Villa, José Antonio; Nemirovsky, Mario; Alarcón Cot, Eduardo José; Solé Pareta, Josep (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference lecture
    Restricted access - publisher's policy
    In the last decade, the field of microprocessor architecture has seen the rise of multicore processors, which consist of the interconnection of a set of independent processing units or cores in the same chip. As the number ...

  • Caracterització optoelectrònica del grafè sobre diferents substrats a altes freqüències 

    Gabriel Cortés, Daniel (Universitat Politècnica de Catalunya, 2014-09-09)
    Master thesis (pre-Bologna period)
    Open Access
    [ANGLÈS] This project presents a study for both optic and electronic properties of graphene and possible variations of different physical magnitudes that are produced in a material when a single layer of graphene is deposited ...

  • Characterization and implementation of resistance-to-time-to-digital readout system for novel photoresistor based on graphene 

    García Gutiérrez, Mario Marcos (Universitat Politècnica de Catalunya, 2017-09-07)
    Master thesis
    Restricted access - confidentiality agreement

  • Characterization of the methane–graphene hydrophobic interaction in aqueous solution from ab initio simulations 

    Calero Borrallo, Carles; Martí Rabassa, Jordi; Guàrdia Manuel, Elvira; Masia, Marco (2013-09-17)
    Article
    Restricted access - publisher's policy
    In this article, the interaction between a methane molecule and a graphene plane in liquid water has been characterized employing DFT-based free energy Molecular Dynamics calculations. This system represents a good model ...

  • Coexistence of wrinkles and blisters in supported graphene 

    Zang, Kuan; Arroyo Balaguer, Marino (Elsevier, 2017-07-01)
    Article
    Open Access
    Blisters induced by gas trapped in the interstitial space between supported graphene and the substrate are commonly observed. These blisters are often quasi-spherical with a circular rim, but polygonal blisters are also ...

  • Colloidal Quantum Dot Tandem Solar Cells Using CVD Graphene as An Atomically Thin Intermediate Recombination Layer 

    Bi, Yu; Pradhan, Santanu; Akgul, Mehmet Zafer; Gupta, Shuchi; Stavrinadis, Alexandros; Wang, Jianjun; Konstantatos, Gerasimos (ACS, 2018-06-28)
    Article
    Open Access
    Two-terminal tandem cell architectures are believed to be an effective way to further improve the power conversion efficiency in solution processed photovoltaics. To design an efficient tandem solar cell, two key issues ...

  • Competing Ultrafast Energy Relaxation Pathways in Photoexcited Graphene 

    Jensen, S. A.; Mics, Z.; Ivanov, I.; Varol, H. S.; Turchinovich, D.; Bonn, M.; Tielrooij, K. J. (ACS Publications, 2014-09-23)
    Article
    Open Access

  • Construction of free-standing films using graphene for biomedical applications 

    Biurrun Zuasti, Maialen (Universitat Politècnica de Catalunya / Zhejiang University, 2011)
    Master thesis
    Restricted access - author's decision
    The LbL Electrostatic Self Assembly could be used to produce nano or micrometric thickness multilayer films with several different functionalities and applications. It is based on the alternative dipping of a substrate in ...

  • CVD graphene-FET based cascode circuits: a design exploration and fabrication towards intrinsic gain enhancement 

    Iannazzo Soteras, Mario Enrique; Alarcón Cot, Eduardo José; Pandey, Himadri; Passi, V.; Lemme, M. C. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    This paper presents the design exploration of a basic cascode circuit (CAS) targeted to increase the intrinsic gain A# of a graphene field-effect-transistor (GFET) by decreasing its output conductance go. First, the ...

  • Direct growth of 2D and 3D graphene nano-structures over large glass substrates by tuning a sacrificial Cu-template layer 

    Marchena, Miriam; Song, Zhen; Senaratne, Wageesha; Li, Connie; Liu, Xinyuan; Baker, David; Canet Ferrer, Josep; Mazumder, Prantik; Soni, Kamal; Lee, Robert; Pruneri, Valerio (IOP, 2017-03-28)
    Article
    Open Access
    We demonstrate direct growth of two-dimensional (2D) and three-dimensional (3D) graphene structures on glass substrates. By starting from catalytic copper nanoparticles of different densities and using chemical vapour ...

  • Dispositivos optoelectrónicos con grafeno para comunicaciones ópticas: guías ópticas de silicio y grafeno 

    Monpeat López, Salvador (Universitat Politècnica de Catalunya, 2017-05)
    Bachelor thesis
    60 months embargo

  • Double-layer graphene for enhanced tunable infrared plasmonics 

    Rodrigo, Daniel; Tittl, Andreas; Lima, Odeta; García de Abajo, Francisco Javier; Pruneri, Valerio; Altug, Hatice (Nature, 2017-06-02)
    Article
    Open Access
    Graphene is emerging as a promising material for photonic applications owing to its unique optoelectronic properties. Graphene supports tunable, long-lived and extremely confined plasmons that have great potential for ...

  • Dry transfer of graphene to dielectrics and flexible substrates using polyimide as a transparent and stable intermediate layer 

    Marchena, Miriam; Wagner, Frederic; Arliguie, Therese; Zhu, Bin; Johnson, Benedict; Fernández, Manuel; Chen, Tong Lai; Chang, Theresa; Lee, Robert; Pruneri, Valerio; Mazumder, Prantik (IOP, 2018-04-30)
    Article
    Open Access
    We demonstrate the direct transfer of graphene from Cu foil to glass and flexible substrates such as PET, using polyimide (PI) mixed with an aminosilane (3-aminopropyltrimethoxysilane) or only PI, respectively, as intermediate ...

  • Effects of carbon nanotubes/graphene nanoplatelets hybrid systems on the structure and properties of polyetherimide-based foams 

    Abbasi, Hooman; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio (2018-03-21)
    Article
    Open Access
    Foams based on polyetherimide (PEI) with carbon nanotubes (CNT) and PEI with graphene nanoplatelets (GnP) combined with CNT were prepared by water vapor induced phase separation. Prior to foaming, variable amounts of only ...

  • Effects of graphene concentration, relative density and cellular morphology on the thermal conductivity of polycarbonate–graphene nanocomposite foams 

    Gedler, Gabriel; Antunes, Marcelo de Sousa Pais; Velasco Perero, José Ignacio; Ozisik, Rahmi (2016-02)
    Article
    Open Access
    The thermal conductivity of polycarbonate–graphene nanocomposite foams was studied as a function of relative density, developed cellular structure and graphene concentration. Two types of supercritical CO2 foaming processes ...